Wikipedia
Ježíšek (the Baby Jesus) is a cultural Christmas figure popular in the Czech Republic. It is also known as Ježiško in Slovakia and as Jézuska in Hungary.
There is no accurate description of Ježíšek. He has been depicted as a baby, toddler, and young lad. Some even consider him simply as an abstract figure. According to tradition, Ježíšek makes his appearance on Christmas Eve. After families have the traditional Czech dinner of carp, potato salad, carp soup or pea soup family with children go to some room and watch the sky and look out for Ježíšek. Meanwhile, someone rings a bell. After that, children run to a room where there are already presents. In some families Ježíšek also sets up a Christmas tree. In others parents buy a tree and whole family decorates it. Little boys and girls open their gifts on 24 December.